Geometrical instruments – Distance measuring – Opposed contacts
Patent
1992-09-14
1995-03-28
Wirthlin, Alvin
Geometrical instruments
Distance measuring
Opposed contacts
33568, G01B 318, B23Q 1600
Patent
active
054005230
ABSTRACT:
A precise motion transducer is described. The transducer converts relatively large inputs, either forces or motions, into relatively small predictable and repeatable motions at the output. The input forces or motions may be produced by a Micrometer, a set of calibrated masses (weights), an electromagnetic voice coil (solenoid) or any other standard or customized device that can produce a calibrated force or motion and deliver this force or motion to the transducer. The force or motion, once delivered to the transducer body, is then transformed into a small motion which is then available to control the position or motion of a component, device or instrument. The transducer, thus constructed comprises a deformable elastic transducer body, a mechanism for applying known calibrated loads or displacements to the deformable elastic transducer body, a means for attaching the transducer to the fixed chassis, frame or foundation of the instrument, a mechanism for selecting, isolating and transmitting the desired motion of the elastic transducer body to the item to be moved or positioned, and a means for attaching the elastic transducer body to the item to be moved or positioned. When the input force or motion is produced by a Micrometer, a track pad and anvil are placed between the Micrometer spindle and the surface of the transducer to provide a uniform distribution of the contact stresses and to prevent wear of the transducer at the contact surface.
REFERENCES:
patent: 2661540 (1953-12-01), Dulligan
patent: 4420055 (1984-01-01), Reedy et al.
patent: 4485562 (1984-12-01), De Fazio
patent: 4887804 (1989-12-01), Ohtsuka
patent: 5003703 (1991-04-01), Swanson
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